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Finding the Fourth Proportional to 20,160.60, 30,121.50 and 19,471.56

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Solution

The fourth proportional to 20,160.60, 30,121.50 and 19,471.56 is: 29,092.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.60 : 30,121.50 = 19,471.56 : x
  2. Step 2: Convert to fraction form
    20,160.60/30,121.50 = 19,471.56/x
  3. Step 3: Cross multiply
    20,160.60x = 30,121.50 × 19,471.56
  4. Step 4: Simplify right side
    20,160.60x = 586,512,594.54
  5. Step 5: Solve for x
    x = 586,512,594.54/20,160.60
  6. Step 6: Final answer
    x = 29,092.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.